The study found that climate-related melting is the primary control on mountain glacier loss. With glacier loss from Alaska unlikely to slow down, this will be a major driver of global sea level change in the coming decades.

"The Alaska region has long been considered a primary player in the global sea level budget, but the exact details on the drivers and mechanisms of Alaska glacier change have been stubbornly elusive," said Chris Larsen, research associate professor with the Geophysical Institute at the University of Alaska Fairbanks.

The team analysed surveys of 116 glaciers in the Alaska region across 19 years to estimate ice loss from melting and iceberg calving. They collected airborne altimetric liDAR (Light Detection and Ranging) data as part of NASA's Operation IceBridge and integrated the new data with information from the 1990s collected by UAF scientist and pilot Keith Echelmeyer.

"This large dataset of direct observations enabled a much more detailed assessment and attribution of recent glacier change than previously possible," Larsen said.